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Air quality in Ulster
Air quality index (AQI) and PM2.5 air pollution in Ulster
LIVE AQI CITY RANKING
Real-time Ulster
Most polluted city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Cavan | 44 |
| 2 | Letterkenny | 43 |
| 3 | Carndonagh | 31 |
| 4 | Buncrana | 25 |
| 5 | Clonmany | 22 |
| 6 | Monaghan | 22 |
(local time)
SEE WORLD AQI RANKINGAIR QUALITY DATA CONTRIBUTORS
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LIVE AQI CITY RANKING
Real-time Ulster
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Clonmany | 22 |
| 2 | Monaghan | 22 |
| 3 | Buncrana | 25 |
| 4 | Carndonagh | 31 |
| 5 | Letterkenny | 43 |
| 6 | Cavan | 44 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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Unhealthy for sensitive groups
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News
The latest air quality news and resources.
Ulster air quality data attribution
2 Data sources
Which is the most polluted city in Ulster?
AQI US, Metric